/Engine/Source/Runtime/AudioMixer/Public/Quartz/QuartzSubsystem.h
Returns the amount of time, in seconds, the clock has been running. Caution: due to latency, this will not be perfectly accurate.
float GetEstimatedClockRunTime ( const [UObject](API\Runtime\CoreUObject\UObject\UObject) * WorldContextObject, const [FName](API\Runtime\Core\UObject\FName) & InClockName )